<template>
  <div>
    <!-- 面包屑导航区域 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>添加商品</el-breadcrumb-item>
        </el-breadcrumb>
      <el-card>
        <el-alert
          title="添加商品信息"
          type="info"
          show-icon
          :closable="false"
          center>
        </el-alert>
        <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
          <el-step title="基本信息"></el-step>
          <el-step title="商品参数"></el-step>
          <el-step title="商品属性"></el-step>
          <el-step title="商品图片"></el-step>
          <el-step title="商品内容"></el-step>
          <el-step title="完成"></el-step>

        </el-steps>
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top" >
        <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
            <el-tab-pane label="基本信息" name="0">
                <el-form-item label="商品名称" prop="goods_name">
                  <el-input v-model="addForm.goods_name"></el-input>
                </el-form-item>
                <el-form-item label="商品价格" prop="goods_price" >
                  <el-input v-model="addForm.goods_price" type="number"></el-input>
                </el-form-item>
                <el-form-item label="商品重量" prop="goods_weight">
                  <el-input v-model="addForm.goods_weight" type="number"></el-input>
                </el-form-item>
                <el-form-item label="商品数量" prop="goods_number">
                  <el-input v-model="addForm.goods_number" type="number"></el-input>
                </el-form-item>
                <el-form-item label="商品分类" prop="goods_cat">
                 <el-cascader
                  v-model="addForm.goods_cat"
                  :options="cateList"
                  :props="cateProps"
                  @change="handleChange"
                  expandTrigger="hover">
                  </el-cascader>
                </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品参数" name="1">

              <el-form-item :label="item.attr_name" v-for="item in manyTableData" :key="item.attr_id">
                 <el-checkbox-group v-model="item.attr_vals">
                    <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border>
                    </el-checkbox>
                </el-checkbox-group>
              </el-form-item>

              </el-tab-pane>
            <el-tab-pane label="商品属性" name="2">
              <el-form-item :label="item.attr_name" v-for="item in onlyTableData"
              :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>

              </el-form-item>

            </el-tab-pane>
            <el-tab-pane label="商品图片" name="3">

              <el-upload
                  action="http://127.0.0.1:8888/api/private/v1/upload"
                 :on-preview="handlePreview"
                 :on-remove="handleRemove"
                 list-type="picture"
                 :headers="headerObj"
                 :on-success="handleSuccess"
                 >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
              </el-upload>

            </el-tab-pane>
            <el-tab-pane label="商品内容" name="4">

                <quill-editor v-model="addForm.goods_introduce"></quill-editor>
                <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>

            </el-tab-pane>
         </el-tabs>
            </el-form>
      </el-card>
      <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%"
>
 <img :src="previewPath" alt="" class="previewImg">

</el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data () {
    return {
      activeIndex: '0',
      // 添加商品的表单数据对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品分类', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      // 商品分类列表
      cateList: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      manyTableData: [],
      onlyTableData: [],
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath: '',
      previewVisible: false
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const { data: res } = await this.$http.get('categories')

      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败!')
      }
      this.cateList = res.data
      console.log(this.cateList)
    },
    handleChange () {

    },
    beforeTabLeave (activeName, oldActiveName) {
      // console.log('即将离开的标签页：' + oldActiveName)
      // console.log('即将进入的标签页：' + activeName)
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类')
        return false
      }
    },
    async tabClicked () {
      console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'many' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败')
        }
        console.log(res.data)
        res.data.forEach(item => {
          item.attr_vals = item.attr_vals.length === 0 ? []
            : item.attr_vals.split(' ')
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'only' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态参数失败')
        }
        console.log(res.data)
        this.onlyTableData = res.data
      }
    },
    handlePreview (file) {
      this.previewPath = file.response.data.url
      this.previewVisible = true
      console.log(file)
    },
    handleRemove (file) {
      const filePath = file.response.data.temp_path
      const i = this.addForm.pics.findIndex(x => x.pic === filePath)
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    handleSuccess (response) {
      console.log(response)
      const picInfo = { pic: response.data.temp_path }
      this.addForm.pics.push(picInfo)
    },
    add () {
      console.log(this.addForm)
      this.$refs.addFormRef.validate(
        async valid => {
          if (!valid) {
            return this.$message.error('请填写必要的表单项！')
          }
          const form = _.cloneDeep(this.addForm)
          form.goods_cat = form.goods_cat.join(',')
          this.manyTableData.forEach(item => {
            const newInfo = {
              attr_id: item.attr_id,
              attr_value: item.attr_vals.join(' ')
            }
            this.addForm.attrs.push(newInfo)
          })
          this.onlyTableData.forEach(item => {
            const newInfo = { attr_id: item.attr_id, attr_vals: item.attr_vals }
            this.addForm.attrs.push(newInfo)
          })
          form.attrs = this.addForm.attrs
          console.log(form)
          const { data: res } = await this.$http.post('goods', form)
          if (res.meta.status !== 201) {
            return this.$message.error('商品添加失败！')
          }
          this.$message.success('添加商品成功！')
          this.$router.push('/goods')
        }
      )
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
  .el-checkbox {
    margin: 0 5px 0 0 !important;
  }
  .previewImg{
    width: 100%;
  }
  .btnAdd{
    margin-top:15px ;
  }
</style>
